Red noise versus planetary interpretations in the microlensing event ogle-2013-BLG-446

E. Bachelet; D. M. Bramich; C. Han; J. Greenhill; R. A. Street; A. Gould; G. D'Ago; K. Alsubai; M. Dominik; R. Figuera Jaimes; K. Horne; M. Hundertmark; N. Kains; C. Snodgrass; I. A. Steele; Y. Tsapras; M. D. Albrow; V. Batista; J. P. Beaulieu; D. P. Bennett; S. Brillant; J. A.R. Caldwell; A. Cassan; A. Cole; C. Coutures; S. Dieters; D. Dominis Prester; J. Donatowicz; P. Fouqué; K. Hill; J. B. Marquette; J. Menzies; C. Pere; C. Ranc; J. Wambsganss; D. Warren; L. Andrade De Almeida; J. Y. Choi; D. L. Depoy; S. Dong; L. W. Hung; K. H. Hwang; F. Jablonski; Y. K. Jung; S. Kaspi; N. Klein; C. U. Lee; D. Maoz; J. A. Muñoz; D. Nataf; H. Park; R. W. Pogge; D. Polishook; I. G. Shin; A. Shporer; J. C. Yee; F. Abe; A. Bhattacharya; I. A. Bond; C. S. Botzler; M. Freeman; A. Fukui; Y. Itow; N. Koshimoto; C. H. Ling; K. Masuda; Y. Matsubara; Y. Muraki; K. Ohnishi; L. C. Philpott; N. Rattenbury; To Saito; D. J. Sullivan; T. Sumi; D. Suzuki; P. J. Tristram; A. Yonehara; V. Bozza; S. Calchi Novati; S. Ciceri; P. Galianni; S. H. Gu; K. Harpsøe; T. C. Hinse; U. G. Jørgensen; D. Juncher; H. Korhonen; L. Mancini; C. Melchiorre; A. Popovas; A. Postiglione; M. Rabus; S. Rahvar; R. W. Schmidt; G. Scarpetta; J. Skottfelt; John Southworth; An Stabile; J. Surdej; X. B. Wang; O. Wertz

doi:https://doi.org/10.1088/0004-637X/812/2/136

Red noise versus planetary interpretations in the microlensing event ogle-2013-BLG-446

E. Bachelet, D. M. Bramich, C. Han, J. Greenhill, R. A. Street, A. Gould, G. D'Ago, K. Alsubai, M. Dominik, R. Figuera Jaimes, K. Horne, M. Hundertmark, N. Kains, C. Snodgrass, I. A. Steele, Y. Tsapras, M. D. Albrow, V. Batista, J. P. Beaulieu, D. P. BennettS. Brillant, J. A.R. Caldwell, A. Cassan, A. Cole, C. Coutures, S. Dieters, D. Dominis Prester, J. Donatowicz, P. Fouqué, K. Hill, J. B. Marquette, J. Menzies, C. Pere, C. Ranc, J. Wambsganss, D. Warren, L. Andrade De Almeida, J. Y. Choi, D. L. Depoy, S. Dong, L. W. Hung, K. H. Hwang, F. Jablonski, Y. K. Jung, S. Kaspi, N. Klein, C. U. Lee, D. Maoz, J. A. Muñoz, D. Nataf, H. Park, R. W. Pogge, D. Polishook, I. G. Shin, A. Shporer, J. C. Yee, F. Abe, A. Bhattacharya, I. A. Bond, C. S. Botzler, M. Freeman, A. Fukui, Y. Itow, N. Koshimoto, C. H. Ling, K. Masuda, Y. Matsubara, Y. Muraki, K. Ohnishi, L. C. Philpott, N. Rattenbury, To Saito, D. J. Sullivan, T. Sumi, D. Suzuki, P. J. Tristram, A. Yonehara, V. Bozza, S. Calchi Novati, S. Ciceri, P. Galianni, S. H. Gu, K. Harpsøe, T. C. Hinse, U. G. Jørgensen, D. Juncher, H. Korhonen, L. Mancini, C. Melchiorre, A. Popovas, A. Postiglione, M. Rabus, S. Rahvar, R. W. Schmidt, G. Scarpetta, J. Skottfelt, John Southworth, An Stabile, J. Surdej, X. B. Wang, O. Wertz

School of Physics and Astronomy

Tel Aviv University

Research output: Contribution to journal › Article › peer-review

Abstract

For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensing data sets using the microlensing event OGLE-2013-BLG-0446 as a case study. The event was observed from multiple sites around the world and its high magnification (A_max ∼ 3000) allowed us to investigate the effects of terrestrial and annual parallax. Real-time modeling of the event while it was still ongoing suggested the presence of an extremely low-mass companion (∼3M) to the lensing star, leading to substantial follow-up coverage of the light curve. We test and compare different models for the light curve and conclude that the data do not favor the planetary interpretation when systematic errors are taken into account.

Original language	English
Article number	136
Journal	Astrophysical Journal
Volume	812
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/812/2/136
State	Published - 20 Oct 2015

Keywords

gravitational lensing: micro
planetary systems
techniques: photometric

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

https://doi.org/10.1088/0004-637X/812/2/136

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Bachelet, E., Bramich, D. M., Han, C., Greenhill, J., Street, R. A., Gould, A., D'Ago, G., Alsubai, K., Dominik, M., Jaimes, R. F., Horne, K., Hundertmark, M., Kains, N., Snodgrass, C., Steele, I. A., Tsapras, Y., Albrow, M. D., Batista, V., Beaulieu, J. P., ... Wertz, O. (2015). Red noise versus planetary interpretations in the microlensing event ogle-2013-BLG-446. Astrophysical Journal, 812(2), Article 136. https://doi.org/10.1088/0004-637X/812/2/136

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abstract = "For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensing data sets using the microlensing event OGLE-2013-BLG-0446 as a case study. The event was observed from multiple sites around the world and its high magnification (Amax ∼ 3000) allowed us to investigate the effects of terrestrial and annual parallax. Real-time modeling of the event while it was still ongoing suggested the presence of an extremely low-mass companion (∼3M) to the lensing star, leading to substantial follow-up coverage of the light curve. We test and compare different models for the light curve and conclude that the data do not favor the planetary interpretation when systematic errors are taken into account.",

keywords = "gravitational lensing: micro, planetary systems, techniques: photometric",

author = "E. Bachelet and Bramich, {D. M.} and C. Han and J. Greenhill and Street, {R. A.} and A. Gould and G. D'Ago and K. Alsubai and M. Dominik and Jaimes, {R. Figuera} and K. Horne and M. Hundertmark and N. Kains and C. Snodgrass and Steele, {I. A.} and Y. Tsapras and Albrow, {M. D.} and V. Batista and Beaulieu, {J. P.} and Bennett, {D. P.} and S. Brillant and Caldwell, {J. A.R.} and A. Cassan and A. Cole and C. Coutures and S. Dieters and Prester, {D. Dominis} and J. Donatowicz and P. Fouqu{\'e} and K. Hill and Marquette, {J. B.} and J. Menzies and C. Pere and C. Ranc and J. Wambsganss and D. Warren and Almeida, {L. Andrade De} and Choi, {J. Y.} and Depoy, {D. L.} and S. Dong and Hung, {L. W.} and Hwang, {K. H.} and F. Jablonski and Jung, {Y. K.} and S. Kaspi and N. Klein and Lee, {C. U.} and D. Maoz and Mu{\~n}oz, {J. A.} and D. Nataf and H. Park and Pogge, {R. W.} and D. Polishook and Shin, {I. G.} and A. Shporer and Yee, {J. C.} and F. Abe and A. Bhattacharya and Bond, {I. A.} and Botzler, {C. S.} and M. Freeman and A. Fukui and Y. Itow and N. Koshimoto and Ling, {C. H.} and K. Masuda and Y. Matsubara and Y. Muraki and K. Ohnishi and Philpott, {L. C.} and N. Rattenbury and To Saito and Sullivan, {D. J.} and T. Sumi and D. Suzuki and Tristram, {P. J.} and A. Yonehara and V. Bozza and {Calchi Novati}, S. and S. Ciceri and P. Galianni and Gu, {S. H.} and K. Harps{\o}e and Hinse, {T. C.} and J{\o}rgensen, {U. G.} and D. Juncher and H. Korhonen and L. Mancini and C. Melchiorre and A. Popovas and A. Postiglione and M. Rabus and S. Rahvar and Schmidt, {R. W.} and G. Scarpetta and J. Skottfelt and John Southworth and An Stabile and J. Surdej and Wang, {X. B.} and O. Wertz",

year = "2015",

month = oct,

day = "20",

doi = "https://doi.org/10.1088/0004-637X/812/2/136",

language = "الإنجليزيّة",

volume = "812",

journal = "Astrophysical Journal",

issn = "0004-637X",

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Bachelet, E, Bramich, DM, Han, C, Greenhill, J, Street, RA, Gould, A, D'Ago, G, Alsubai, K, Dominik, M, Jaimes, RF, Horne, K, Hundertmark, M, Kains, N, Snodgrass, C, Steele, IA, Tsapras, Y, Albrow, MD, Batista, V, Beaulieu, JP, Bennett, DP, Brillant, S, Caldwell, JAR, Cassan, A, Cole, A, Coutures, C, Dieters, S, Prester, DD, Donatowicz, J, Fouqué, P, Hill, K, Marquette, JB, Menzies, J, Pere, C, Ranc, C, Wambsganss, J, Warren, D, Almeida, LAD, Choi, JY, Depoy, DL, Dong, S, Hung, LW, Hwang, KH, Jablonski, F, Jung, YK, Kaspi, S, Klein, N, Lee, CU, Maoz, D, Muñoz, JA, Nataf, D, Park, H, Pogge, RW, Polishook, D, Shin, IG, Shporer, A, Yee, JC, Abe, F, Bhattacharya, A, Bond, IA, Botzler, CS, Freeman, M, Fukui, A, Itow, Y, Koshimoto, N, Ling, CH, Masuda, K, Matsubara, Y, Muraki, Y, Ohnishi, K, Philpott, LC, Rattenbury, N, Saito, T, Sullivan, DJ, Sumi, T, Suzuki, D, Tristram, PJ, Yonehara, A, Bozza, V, Calchi Novati, S, Ciceri, S, Galianni, P, Gu, SH, Harpsøe, K, Hinse, TC, Jørgensen, UG, Juncher, D, Korhonen, H, Mancini, L, Melchiorre, C, Popovas, A, Postiglione, A, Rabus, M, Rahvar, S, Schmidt, RW, Scarpetta, G, Skottfelt, J, Southworth, J, Stabile, A, Surdej, J, Wang, XB & Wertz, O 2015, 'Red noise versus planetary interpretations in the microlensing event ogle-2013-BLG-446', Astrophysical Journal, vol. 812, no. 2, 136. https://doi.org/10.1088/0004-637X/812/2/136

TY - JOUR

T1 - Red noise versus planetary interpretations in the microlensing event ogle-2013-BLG-446

AU - Bachelet, E.

AU - Bramich, D. M.

AU - Han, C.

AU - Greenhill, J.

AU - Street, R. A.

AU - Gould, A.

AU - D'Ago, G.

AU - Alsubai, K.

AU - Dominik, M.

AU - Jaimes, R. Figuera

AU - Horne, K.

AU - Hundertmark, M.

AU - Kains, N.

AU - Snodgrass, C.

AU - Steele, I. A.

AU - Tsapras, Y.

AU - Albrow, M. D.

AU - Batista, V.

AU - Beaulieu, J. P.

AU - Bennett, D. P.

AU - Brillant, S.

AU - Caldwell, J. A.R.

AU - Cassan, A.

AU - Cole, A.

AU - Coutures, C.

AU - Dieters, S.

AU - Prester, D. Dominis

AU - Donatowicz, J.

AU - Fouqué, P.

AU - Hill, K.

AU - Marquette, J. B.

AU - Menzies, J.

AU - Pere, C.

AU - Ranc, C.

AU - Wambsganss, J.

AU - Warren, D.

AU - Almeida, L. Andrade De

AU - Choi, J. Y.

AU - Depoy, D. L.

AU - Dong, S.

AU - Hung, L. W.

AU - Hwang, K. H.

AU - Jablonski, F.

AU - Jung, Y. K.

AU - Kaspi, S.

AU - Klein, N.

AU - Lee, C. U.

AU - Maoz, D.

AU - Muñoz, J. A.

AU - Nataf, D.

AU - Park, H.

AU - Pogge, R. W.

AU - Polishook, D.

AU - Shin, I. G.

AU - Shporer, A.

AU - Yee, J. C.

AU - Abe, F.

AU - Bhattacharya, A.

AU - Bond, I. A.

AU - Botzler, C. S.

AU - Freeman, M.

AU - Fukui, A.

AU - Itow, Y.

AU - Koshimoto, N.

AU - Ling, C. H.

AU - Masuda, K.

AU - Matsubara, Y.

AU - Muraki, Y.

AU - Ohnishi, K.

AU - Philpott, L. C.

AU - Rattenbury, N.

AU - Saito, To

AU - Sullivan, D. J.

AU - Sumi, T.

AU - Suzuki, D.

AU - Tristram, P. J.

AU - Yonehara, A.

AU - Bozza, V.

AU - Calchi Novati, S.

AU - Ciceri, S.

AU - Galianni, P.

AU - Gu, S. H.

AU - Harpsøe, K.

AU - Hinse, T. C.

AU - Jørgensen, U. G.

AU - Juncher, D.

AU - Korhonen, H.

AU - Mancini, L.

AU - Melchiorre, C.

AU - Popovas, A.

AU - Postiglione, A.

AU - Rabus, M.

AU - Rahvar, S.

AU - Schmidt, R. W.

AU - Scarpetta, G.

AU - Skottfelt, J.

AU - Southworth, John

AU - Stabile, An

AU - Surdej, J.

AU - Wang, X. B.

AU - Wertz, O.

PY - 2015/10/20

Y1 - 2015/10/20

N2 - For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensing data sets using the microlensing event OGLE-2013-BLG-0446 as a case study. The event was observed from multiple sites around the world and its high magnification (Amax ∼ 3000) allowed us to investigate the effects of terrestrial and annual parallax. Real-time modeling of the event while it was still ongoing suggested the presence of an extremely low-mass companion (∼3M) to the lensing star, leading to substantial follow-up coverage of the light curve. We test and compare different models for the light curve and conclude that the data do not favor the planetary interpretation when systematic errors are taken into account.

AB - For all exoplanet candidates, the reliability of a claimed detection needs to be assessed through a careful study of systematic errors in the data to minimize the false positives rate. We present a method to investigate such systematics in microlensing data sets using the microlensing event OGLE-2013-BLG-0446 as a case study. The event was observed from multiple sites around the world and its high magnification (Amax ∼ 3000) allowed us to investigate the effects of terrestrial and annual parallax. Real-time modeling of the event while it was still ongoing suggested the presence of an extremely low-mass companion (∼3M) to the lensing star, leading to substantial follow-up coverage of the light curve. We test and compare different models for the light curve and conclude that the data do not favor the planetary interpretation when systematic errors are taken into account.

KW - gravitational lensing: micro

KW - planetary systems

KW - techniques: photometric

UR - http://www.scopus.com/inward/record.url?scp=84946142045&partnerID=8YFLogxK

U2 - https://doi.org/10.1088/0004-637X/812/2/136

DO - https://doi.org/10.1088/0004-637X/812/2/136

M3 - مقالة

SN - 0004-637X

VL - 812

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 136

ER -

Red noise versus planetary interpretations in the microlensing event ogle-2013-BLG-446

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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